Zobrazeno 1 - 10
of 25
pro vyhledávání: '"M. V. Otugen"'
Publikováno v:
AIAA Journal. 44:2385-2389
Temperature measurements were made using a novel microoptical sensor based on dielectric microspheres that are excited by coupling light from optical fibers. The technique exploits the morphology-dependent shifts in resonant frequencies that are comm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b9f4ccdc5b2f160a1dd6aee1b108c5b7
https://doi.org/10.2514/1.20910
https://doi.org/10.2514/1.20910
Publikováno v:
Experiments in Fluids. 36:510-514
Mean and rms profiles of the wall-normal gradient of the streamwise velocity were obtained in a boundary layer using a recently proposed laser velocity gradient technique (LVG). An analysis was also carried out to estimate data rates and to determine
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::91bca204e9cc9f420bc68c45c5d1b5c2
https://doi.org/10.1007/s00348-003-0757-z
https://doi.org/10.1007/s00348-003-0757-z
Publikováno v:
Scopus-Elsevier
The laminar flow through an axisymmetric sudden expansion was investigated experimentally using real-time digital particle image velocimetry. An expansion ratio (downstream-to-upstream pipe diameter ratio) of 2 was selected for the study. The measure
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8e29833b2ab0ded8775ee63f2138dd5d
https://doi.org/10.1007/s003480050288
https://doi.org/10.1007/s003480050288
Publikováno v:
AIAA Journal. 35:776-781
A dual-line detection Rayleigh scattering system for temperature and pressure diagnostics of gas flows is presented. The system, which uses two harmonics of an Nd:YAG laser simultaneously, is similar to an earlier version that utilized a copper-vapor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0a2d39d15e437dfc33ac323a7588785c
https://doi.org/10.2514/2.7446
https://doi.org/10.2514/2.7446
Autor:
M. V. Otugen, S. Popovic
Publikováno v:
AIAA Journal. 35:776-781
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9d089882c2e2982c03ef2d3d66ccf3dd
https://doi.org/10.2514/3.13587
https://doi.org/10.2514/3.13587
Autor:
M. V. Otugen, George A. Papadopoulos
Publikováno v:
Journal of Fluids Engineering. 117:17-23
The incompressible turbulent flow over a backward-facing step in a rectangular duct was investigated experimentally. The side wall effects on the core flow were determined by varying the aspect ratio (defined as the step span-to-height ratio) from 1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a1a63f86230244f086caab3d10cc4f67
https://doi.org/10.1115/1.2816809
https://doi.org/10.1115/1.2816809
Publikováno v:
AIAA Journal. 31:2098-2104
A new laser-induced Rayleigh scattering method is presented for the improved temperature diagnostics of gas flows. In the present technique, the two lines of a copper vapor laser are used to obtain the time and space resolved temperature. A single se
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5bfa9356c223603025977933bfd8998f
https://doi.org/10.2514/3.11896
https://doi.org/10.2514/3.11896
Publikováno v:
Experiments in Fluids. 14:213-216
The secondary flow due to the growth of the streamwise vortices near the side walls serves to diminish the spanwise uniformity of the time-mean flow properties. In the region adjacent to the side walls, momentum mixing is enhanced due to the existenc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::036e6089461552f8d230e23301e3975f
https://doi.org/10.1007/bf00189514
https://doi.org/10.1007/bf00189514
Publikováno v:
AIAA Journal. 28:1038-1044
The unsteady, periodic flow inside a vaneless diffuser was investigated experimentally. Flow through the model diffuser was delivered by an actual impeller and exited to room conditions. The mass flow rate through the diffuser was chosen to be high e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::27419649c703e761049e8f6291a9dfad
https://doi.org/10.2514/3.25162
https://doi.org/10.2514/3.25162
Autor:
M V Otugen
A laser-based probe for the direct, non-intrusive measurement of temporally- and spatially-resolved velocity gradient and vorticity is developed and demonstrated. The optical probes developed were used in turbulent two-stream mixing layers as well as
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a3f1b731f301e872adcd83f5350c1a19
https://doi.org/10.21236/ada427394
https://doi.org/10.21236/ada427394
